I don't think Non-members should be able to outbid a member ... If nobody wants it then sure let a guest go for it

If a non member can get just as much loot as a member what is the inspiration to join TF? Not that it is only about loot but if a non member is raiding with you all the time, bidding, winning loot, joining the guild would be nothing but a chat-channel to them... Thats not what i see as an inspiration to join the guild.